I wrote to Ricardo Diaz & Eric Dumazet to ask if the patch for this bug would be backported and it looks like the fix was made for the Linux stable kernels very recently: https://www.spinics.net/lists/stable- commits/msg244651.html
Eric Dumazet also mentioned that: "the bug only happens if networking configuration is not optimal. (We never hit the bug at Google) Normally, all packets for a given 4-tuple should be handled by the same cpu. On multi-queues NIC, RSS ensures this, if only one cpu is servicing interrupts for any receive queue. Otherwise, cpus compete over the same spinlocks, and could hit the race that Ricardo fixed. I suggest you also work on networking configuration, as this could help even without this race, but once flows are established." He suggested looking at `Documentation/networking/scaling.rst` as a starting point for tackling the network configuration. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1924298 Title: accept returns duplicate endpoints under load To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1924298/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
